/*
 * Copyright 2009 Brian Mackay brianwmackay@msn.com
 *   All Rights Reserved. See end of file
 */
package com.bmackay.vonsteuben.blocksorting;

import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.io.Text;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import org.apache.hadoop.mapred.MapReduceBase;

public class BlockMapper extends MapReduceBase implements
        Mapper<WritableComparable, Text, Text, Text> {

    private BlockMapperProcessing mapperProcessing = new BlockMapperProcessing();
    private Text outValue = new Text();
    private Text outKey = new Text();
    private BlockMapperFileCache blockMapperFileCache = new BlockMapperFileCache();

    @Override
    public void map(WritableComparable key, Text values,
            OutputCollector<Text, Text> output, Reporter reporter) throws IOException {

        Hashtable<String, String> ht = mapperProcessing.execute(values.toString(), "^", blockMapperFileCache);

        Iterator WeaverAppKeyValuePairs = ht.entrySet().iterator();

        for (int j = 0; j < ht.size(); j++) {

            Map.Entry map = (Map.Entry) WeaverAppKeyValuePairs.next();
            outKey.set((String) map.getKey());
            outValue.set((String) map.getValue());
            output.collect(outKey, outValue);
        }
    }

    @Override
    public void configure(JobConf job) {
        super.configure(job);
        blockMapperFileCache.init();

    }
}
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

